Microstructural characterization and wear properties of ultra-dispersed nanodiamond (UDD) reinforced Al matrix composites fabricated by ball-milling and sintering

H. Kaftelen; M. L. Öveçoǧlu

doi:10.1177/0021998311421636

Microstructural characterization and wear properties of ultra-dispersed nanodiamond (UDD) reinforced Al matrix composites fabricated by ball-milling and sintering

H. Kaftelen^*, M. L. Öveçoǧlu

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Mersin University

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Elemental aluminum (Al) powders reinforced with 1-10 - wt% of ultra-dispersed nanodiamond (UDD) powders were ball-milled in a SpexTM Mixer/Mill between 0 and 120 - min followed by consolidation and sintering. X-ray diffraction analyses on the ball-milled powders revealed only α-Al peaks, wherea Al ₄C ₃ phase was identified along with α-Al in all sintered composites. Increasing the addition of nanodiamond to Al-matrix resulted in improved hardness of both ball-milled and sintered composites. The wear resistances of the Al-UDD composites were significantly improved with increasing UDD contents. Under similar load and sliding conditions, the wear resistance of Al matrix composite containing 10 - wt% nanodiamond enhances about 40 times when compared with unreinforced aluminum.

Original language	English
Pages (from-to)	1521-1534
Number of pages	14
Journal	Journal of Composite Materials
Volume	46
Issue number	13
DOIs	https://doi.org/10.1177/0021998311421636
Publication status	Published - Jun 2012

Keywords

Al metal-matrix composites (AMMCs)
ball-milling
microstructure
nanodiamond powders

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title = "Microstructural characterization and wear properties of ultra-dispersed nanodiamond (UDD) reinforced Al matrix composites fabricated by ball-milling and sintering",

abstract = "Elemental aluminum (Al) powders reinforced with 1-10 - wt% of ultra-dispersed nanodiamond (UDD) powders were ball-milled in a SpexTM Mixer/Mill between 0 and 120 - min followed by consolidation and sintering. X-ray diffraction analyses on the ball-milled powders revealed only α-Al peaks, wherea Al 4C 3 phase was identified along with α-Al in all sintered composites. Increasing the addition of nanodiamond to Al-matrix resulted in improved hardness of both ball-milled and sintered composites. The wear resistances of the Al-UDD composites were significantly improved with increasing UDD contents. Under similar load and sliding conditions, the wear resistance of Al matrix composite containing 10 - wt% nanodiamond enhances about 40 times when compared with unreinforced aluminum.",

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AB - Elemental aluminum (Al) powders reinforced with 1-10 - wt% of ultra-dispersed nanodiamond (UDD) powders were ball-milled in a SpexTM Mixer/Mill between 0 and 120 - min followed by consolidation and sintering. X-ray diffraction analyses on the ball-milled powders revealed only α-Al peaks, wherea Al 4C 3 phase was identified along with α-Al in all sintered composites. Increasing the addition of nanodiamond to Al-matrix resulted in improved hardness of both ball-milled and sintered composites. The wear resistances of the Al-UDD composites were significantly improved with increasing UDD contents. Under similar load and sliding conditions, the wear resistance of Al matrix composite containing 10 - wt% nanodiamond enhances about 40 times when compared with unreinforced aluminum.

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Microstructural characterization and wear properties of ultra-dispersed nanodiamond (UDD) reinforced Al matrix composites fabricated by ball-milling and sintering

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Keywords

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